Fix poll data overridden by message.updated event

[VelikovPetar]

🎯 Goal

The message.updated event doesn't always return the full poll object. In that case, we must fallback to the poll object in the original message, otherwise the poll data will be lost.
Resolves: https://linear.app/stream/issue/AND-841/bug-in-threads-and-polls-behavior-causing-disappearance-of-parent

🛠 Implementation details

• Use the original Message.poll if the MessageUpdatedEvent.poll is missing

🎨 UI Changes

Before	After
before.mp4	after.mp4

🧪 Testing

1. Thread reply to a poll
2. The poll (in the parent message) should not disappear

[github-actions]

SDK Size Comparison 📏

SDK	Before	After	Difference	Status
stream-chat-android-client	3.22 MB	3.22 MB	0.00 MB	🟢
stream-chat-android-offline	3.45 MB	3.45 MB	0.00 MB	🟢
stream-chat-android-ui-components	10.54 MB	10.54 MB	0.00 MB	🟢
stream-chat-android-compose	12.76 MB	12.76 MB	0.00 MB	🟢

[Copilot]

Pull Request Overview

Fixes an issue where poll data was being lost when handling message.updated events that don't include the complete poll object, ensuring poll state is preserved by falling back to the original message's poll data.

• Added poll preservation logic to MessageUpdatedEvent handling in channel and thread logic
• Enriched Thread.updateParent to maintain poll data when updated parent lacks poll information
• Added comprehensive test coverage for poll preservation scenarios across different event handling contexts

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
ThreadLogic.kt	Added poll fallback logic to preserve original poll when message update event lacks poll data
ChannelLogic.kt	Enhanced message update event handling to maintain poll state from original message
Thread.kt	Updated updateParent function to preserve poll data when parent update doesn't include poll
ThreadLogicTest.kt	Added test cases for poll and reaction preservation in message update events
WhenHandleEvent.kt	Added tests for poll preservation in channel message update handling
ThreadExtensionsTests.kt	Added comprehensive test coverage for thread parent update with poll scenarios
CHANGELOG.md	Added entry documenting the poll state fix

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

.

[sonarqubecloud]

Quality Gate failed

Failed conditions
63.6% Coverage on New Code (required ≥ 80%)

See analysis details on SonarQube Cloud